Turn a small drill press into a Bore/ Hone. Bolt it to the top of your engine block & do your own machining .

Kiss....keep it simple Sir. Respect the thrifty you gets things done at hardly no cost and it keeps on revving.
The time, effort, & $$$ You've pissed away trying to half-*** this isn't going to save You a cent. A lot of Us wouldn't do it, but You could've bought (1) .040" over slug & had the cylinder fixed by a pro, & been done 284 posts ago Dude.....and the cylinder wall won't look like an hour-glass or a snake......or a funnel.....